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Knoxville

$539+ Cheap flights from Heathrow (LHR) to Knoxville (TYS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Heathrow to Knoxville

Cheapest flights from Heathrow to Knoxville
Explore the most affordable flight options available from Heathrow to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Expedia deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:30 am
LHR
-
TYS
2 stops15h 59m
Lufthansa
Sat 2/281:50 pm
TYS
-
LHR
1 stop11h 05m
Lufthansa
Deal found 1/24$670
This Cheapflightsfares deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:30 am
LHR
-
TYS
2 stops16h 59m
Lufthansa
Sat 2/281:50 pm
TYS
-
LHR
1 stop11h 05m
Lufthansa
Deal found 1/24$682
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:00 am
LHR
-
TYS
2 stops16h 37m
United Airlines
Sat 2/2811:41 am
TYS
-
LHR
2 stops15h 14m
United Airlines
Deal found 1/24$685
This TravelUp deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/238:30 am
LHR
-
TYS
2 stops17h 07m
Lufthansa
Mon 3/21:50 pm
TYS
-
LHR
1 stop13h 05m
Lufthansa
Deal found 1/26$688
This United Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:35 am
LHR
-
TYS
2 stops17h 54m
United Airlines
Mon 2/2310:55 am
TYS
-
LHR
2 stops14h 45m
United Airlines
Deal found 1/23$690
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:30 am
LHR
-
TYS
2 stops15h 59m
United Airlines
Sun 3/155:43 pm
TYS
-
LHR
1 stop13h 32m
United Airlines
Deal found 1/24$691
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:50 am
LHR
-
TYS
2 stops15h 02m
United Airlines
Sun 3/15:27 pm
TYS
-
LHR
1 stop12h 48m
United Airlines
Deal found 1/24$692
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:05 pm
LHR
-
TYS
1 stop12h 24m
Lufthansa
Sat 3/147:25 pm
TYS
-
LHR
1 stop11h 25m
Lufthansa
Deal found 1/26$699

Find flight deals from Heathrow to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$682
(Cheapflightsfares)

One-way from

$539
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,185
Provider with most accurate pricing for London Heathrow-Knoxville McGhee Tyson flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Knoxville McGhee Tyson flights.
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From London Heathrow to Knoxville McGhee Tyson
Search Deals
One-way flight from London Heathrow to Knoxville McGhee Tyson
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($155 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Knoxville that are best for you.

Fly from

Heathrow

Fly to

Knoxville

Route

Depart

Return

Price

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 2/20

8:30 am-7:29 pm

2 stops15h 59m

Knoxville McGhee Tyson

Sat 2/28

1:50 pm-5:55 am

1 stop11h 05m

$670

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 2/21

7:30 am-7:29 pm

2 stops16h 59m

Knoxville McGhee Tyson

Sat 2/28

1:50 pm-5:55 am

1 stop11h 05m

$682

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 2/20

9:00 am-8:37 pm

2 stops16h 37m

Knoxville McGhee Tyson

Fri 3/6

10:55 am-6:40 am

2 stops38h 45m

$685

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 2/20

9:00 am-8:37 pm

2 stops16h 37m

Knoxville McGhee Tyson

Sat 2/28

11:41 am-7:55 am

2 stops15h 14m

$685

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 2/23

8:30 am-8:37 pm

2 stops17h 07m

Knoxville McGhee Tyson

Mon 3/2

1:50 pm-7:55 am

1 stop13h 05m

$688

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 2/19

6:35 am-7:29 pm

2 stops17h 54m

Knoxville McGhee Tyson

Mon 2/23

6:45 am-5:55 am

1 stop18h 10m

$690

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 2/23

9:00 am-8:37 pm

2 stops16h 37m

Knoxville McGhee Tyson

Mon 3/2

7:25 pm-10:50 am

1 stop10h 25m

$690

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sat 3/7

9:00 am-8:48 pm

2 stops16h 48m

Knoxville McGhee Tyson

Sat 3/14

2:21 pm-10:50 am

1 stop16h 29m

$690

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 3/9

7:30 am-7:29 pm

2 stops15h 59m

Knoxville McGhee Tyson

Sun 3/15

5:43 pm-11:15 am

1 stop13h 32m

$691

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 3/1

12:15 pm-6:31 pm

2 stops35h 16m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 17 results
1
2

Compare providers for flights from Heathrow to Knoxville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Knoxville in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Knoxville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Knoxville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Knoxville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Knoxville

How far ahead should I book a flight from London Heathrow Airport to Knoxville?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Knoxville. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Knoxville, you should look to book at least 66 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of $366). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of $755). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from London Heathrow Airport to Knoxville?

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated January 26, 2026.
See what other customers who have flown with British Airways from London Heathrow Airport to Knoxville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,700 reviews

Food

6.4

Entertainment

6.4

Overall

6.7

Crew

7.6

Boarding

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.
British Airways
6.7
Okay
7,700 reviews
British Airways
6.7
Okay
7,700 reviews

Food

6.4

Entertainment

6.4

Overall

6.7

Crew

7.6

Boarding

6.9

Comfort

6.8

Reviews

1 / 20
6.0
Good

Roxanne,Sep 2025

LHR - IAD

Food was mediocre. Couldn't use headphones because no information on how to use. Staff paid so much attention on a family with a baby . They got VIP treatment.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Knoxville from London Heathrow?

    For a flight from London Heathrow to Knoxville, you will be flying into McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city. McGhee Tyson is the only Knoxville airport and it handles 0 inbound flights from London Heathrow per day. 1 airline has flights to Knoxville McGhee Tyson from London Heathrow on a regular basis.

  • How long is the flight from London Heathrow Airport to Knoxville?

    Airlines like Lufthansa and United Airlines fly from London Heathrow Airport to Knoxville in about 15h 59m. The time it takes to get you to your destination can typically vary by up to 38m. The distance between London Heathrow Airport and Knoxville is about 4076 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from London Heathrow Airport to Knoxville round-trip?

    Currently priced at $720, British Airways will fly you from London Heathrow Airport to Knoxville and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 25% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Heathrow to Knoxville that include hotel bookings?

    Yes. In addition to deals on Heathrow to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Knoxville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Knoxville.

  • Can I find deals for business class flights from Heathrow to Knoxville?

    Yes. Cheapflights offers flight deals from Heathrow to Knoxville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of $366). Flying from London Heathrow Airport to Knoxville in July is currently the most expensive (average of $755). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Cherokee
Crossville
Corbin
Morristown
Bryson City
Alcoa
Oak Ridge
Murphy

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Knoxville

Discover the top airline that operate flights from Heathrow to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$1,308FlexibilityNo cancel feeOn-time70%

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